Chemistry Year 12 - Module 8 - Lesson 8
Heavy Metal Contamination & Analysis
1. Key Ideas
A rural NSW community reports concerns about arsenic in groundwater and lead in older plumbing. The challenge is not only detecting these metals at low concentration, but understanding why even trace amounts can become dangerous once they enter bodies, food chains and water systems.
- The major heavy metal pollutants of concern in NSW water
- Why AAS is suitable for trace heavy-metal monitoring
2. Success Criteria
By the end, you should be able to:
- The major heavy metal pollutants of concern in NSW water
- Common contamination sources and health effects
- The main remediation strategies used to reduce heavy metal levels
3. Key Terms
4. Activity: Build the Lesson Map
Use the lesson to complete the table. Keep answers brief but specific.
| Prompt | Your answer |
|---|---|
| Main concept | |
| Important example | |
| Common mistake to avoid | |
| How this links to the next lesson |
5. Short Answer Questions
1. Explain this lesson goal in your own words: "The major heavy metal pollutants of concern in NSW water". Use one specific example from the lesson.
2. Apply this idea to a new example: "Common contamination sources and health effects". Show your reasoning clearly.
3. Analyse why this idea matters for understanding Heavy Metal Contamination & Analysis: "The main remediation strategies used to reduce heavy metal levels".
6. Extend: Apply the Idea
A student gives a memorised answer about Heavy Metal Contamination & Analysis but does not use evidence or reasoning.
Improve the answer by writing a stronger response that uses accurate terminology, a relevant example and a clear explanation.
7. Multiple Choice
1. What is the best first step when answering a question about Heavy Metal Contamination & Analysis?
A. Identify the key concept being tested
B. Write every fact from memory
C. Ignore the command word
D. Skip examples and evidence
2. Which answer would show stronger understanding of Heavy Metal Contamination & Analysis?
A. An answer with accurate terms and reasoning
B. A copied definition only
C. A single-word response
D. An answer with no example
3. What should you do if a question asks you to explain?
A. Link the idea to a reason or cause
B. List unrelated facts
C. Only draw a diagram
D. Write the shortest possible answer
8. Success Criteria Proof
Finish with evidence that you can do each success criterion.